Search results
Results From The WOW.Com Content Network
The extermination of megafauna left many niches vacant, which has been cited as an explanation for the vulnerability and fragility of many ecosystems to destruction in the later Holocene extinction. The comparative lack of megafauna in modern ecosystems has reduced high-order interactions among surviving species, reducing ecological complexity ...
New evidence based on accurate optically stimulated luminescence and uranium-thorium dating of megafaunal remains suggests that humans were the ultimate cause of the extinction for some of the megafauna in Australia. [5] [6] The dates derived show that all forms of megafauna on the Australian mainland became extinct in the same rapid timeframe ...
Megafauna also play a role in regulating and stabilizing the abundance of smaller animals. During the Pleistocene, megafauna were diverse across the globe, with most continental ecosystems exhibiting similar or greater species richness in megafauna as compared to ecosystems in Africa today.
The First Americans: The Pleistocene Colonization of the New World. California Academy of Sciences. ISBN 978-0-940228-49-8. Peter Charles Hoffer (2006). The Brave New World: A History of Early America. JHU Press. ISBN 978-0-8018-8483-2. Meltzer, David J (2009). First peoples in a new world: colonizing ice age America. University of California ...
This has variously been explained as: retention of a hypothetically tall ancestral condition; higher-quality diet and nutrition due to the hunting of megafauna which later became uncommon or extinct; functional adaptation to increase stride length and movement efficiency while running during a hunt; increasing territorialism among later Cro ...
Paul Martin at Rampart Cave, home of the Shasta ground sloth in Grand Canyon, ca. 1975. Paul Schultz Martin (born in Allentown, Pennsylvania in 1928, died in Tucson, Arizona September 13, 2010) [1] [2] was an American geoscientist at the University of Arizona who developed the theory that the Pleistocene extinction of large mammals worldwide was caused by overhunting by humans. [3]
[218] [219] [220] Human hunting and butchery of large megafauna, particularly mammoths and mastodon, would likely have put people in competition with Arctodus simus. Defense against these large bears and the abandonment of carcasses are plausible outcomes, [ 18 ] along with the possible caching and disposal of carcass remains underwater to mask ...
People in the first Clovis complex period had large tools to hunt the megafauna animals of the early Paleo-Indian period. [ 9 ] : 5 A key Clovis culture site is the Dent site discovered in 1932 in Weld County , the first site to provide evidence that men and mammoth co-existed, and that man hunted mammoth on the North American continent.